Summamus Storm god. Like the sky god Tin, Summamus wielded thunderbolts and lightning. He had a sanctuary at Rome. Related Information Related Articles Tin. MLAAPAHarvardVancouverChicagoIEEE Jimmy Joe. "Summamus." https://timelessmyths.com/classical/pantheon/etruscan-deities/summamus. Accessed April 20, 2025. Copy Citation By Jimmy Joe